Experimental and numerical investigation of a supersonic inlet with double S-bend diffuser
| Autor: | Guoping Huang, Wang Yunfei, Zhang Jinsheng, Huacheng Yuan |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0209 industrial biotechnology
geography geography.geographical_feature_category Mechanical Engineering Aerospace Engineering 02 engineering and technology Mechanics Inlet Physics::Fluid Dynamics 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering Supersonic speed Diffuser (sewage) Geology |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 235:1763-1778 |
| ISSN: | 2041-3025 0954-4100 |
| Popis: | Design of a supersonic inlet with double S-bend diffuser was developed. Numerical simulation and wind tunnel experiment were carried out to investigate the aerodynamic performance and variable geometric rules of the inlet. The result indicates that the variable geometry scheme adopted solves the contradiction between starting performance at low Mach number and aerodynamic performance at high Mach number. The inlet works normally and stably over a wide speed range. At design point, the total pressure recovery coefficient reaches 0.47. In addition, two different kinds of inlets with double S-bend diffuser and single S-bend diffuser were studied. Compared with the double S-bend diffuser, the total pressure recovery coefficient of the single S-bend diffuser is higher at low Mach number (Ma0< 3) and lower at high Mach number (Ma0> 3). With the increase of backpressure, shock train mainly moves upstream along the low-energy flow region in the diffuser. For the double S-bend diffuser, shock train will first move along the lower corner and then along the upper corner. For the single S-bend diffuser, it will only move along the upper corner. The strong secondary flow of the double S-bend is the main reason for the above phenomenon. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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